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xenmask

Reversible PHI/PII de-identification round-trip for agentic LLM pipelines.

Mask sensitive fields to typed, referentially-consistent surrogate tokens before they reach an LLM; unmask the model's output afterward — with the round-trip enforced as a verifiable invariant (an unmapped token in the output is an error, never shipped).

⚠️ 0.0.0 placeholder. This name is reserved while the v1 API is under active design. Not yet functional. Follow the repo for the first real release.

Why

Static de-identification destroys the linkage you need to keep working. xenmask de-identifies reversibly and locally (no SaaS, no data egress), so you can run agentic intelligence over clinical/casework data and still get real answers back.

Licensed under Apache-2.0.

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